246 lines
7.2 KiB
C++
246 lines
7.2 KiB
C++
// Copyright (c) 2012-2021 Wojciech Figat. All rights reserved.
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#if COMPILE_WITH_TEXTURE_TOOL && COMPILE_WITH_STB
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#include "TextureTool.h"
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#include "Engine/Core/Log.h"
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#include "Engine/Core/Math/Color32.h"
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#include "Engine/Serialization/FileWriteStream.h"
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#include "Engine/Graphics/Textures/TextureData.h"
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#include "Engine/Graphics/PixelFormatExtensions.h"
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#include "Engine/Platform/File.h"
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#define STBI_ASSERT(x) ASSERT(x)
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#define STBI_MALLOC(sz) Allocator::Allocate(sz)
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#define STBI_REALLOC(p, newsz) AllocatorExt::Realloc(p, newsz)
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#define STBI_REALLOC_SIZED(p, oldsz, newsz) AllocatorExt::Realloc(p, oldsz, newsz)
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#define STBI_FREE(p) Allocator::Free(p)
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#define STBI_WRITE_NO_STDIO
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#define STB_IMAGE_WRITE_IMPLEMENTATION
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#include <ThirdParty/stb/stb_image_write.h>
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#define STBI_NO_PSD
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#define STBI_NO_PIC
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#define STBI_NO_PNM
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#define STBI_NO_FAILURE_STRINGS
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#define STBI_NO_STDIO
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#define STB_IMAGE_IMPLEMENTATION
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#include <ThirdParty/stb/stb_image.h>
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static void stbWrite(void* context, void* data, int size)
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{
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auto file = (FileWriteStream*)context;
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file->WriteBytes(data, (uint32)size);
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}
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bool TextureTool::ExportTextureStb(ImageType type, const StringView& path, const TextureData& textureData)
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{
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if (textureData.GetArraySize() != 1)
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{
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LOG(Warning, "Exporting texture arrays and cubemaps is not supported by stb library.");
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}
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// Convert into RGBA8
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const auto sampler = GetSampler(textureData.Format);
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if (sampler == nullptr)
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{
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LOG(Warning, "Texture data format {0} is not supported by stb library.", (int32)textureData.Format);
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return true;
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}
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const auto srcData = textureData.GetData(0, 0);
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const int comp = 4;
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Array<byte> data;
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bool sRGB = PixelFormatExtensions::IsSRGB(textureData.Format);
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if (type == ImageType::HDR)
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{
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data.Resize(sizeof(float) * comp * textureData.Width * textureData.Height);
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auto ptr = (Vector4*)data.Get();
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for (int32 y = 0; y < textureData.Height; y++)
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{
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for (int32 x = 0; x < textureData.Width; x++)
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{
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Color color = SamplePoint(sampler, x, y, srcData->Data.Get(), srcData->RowPitch);
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if (sRGB)
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color = Color::SrgbToLinear(color);
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*(ptr + x + y * textureData.Width) = color.ToVector4();
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}
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}
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}
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else
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{
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data.Resize(sizeof(Color32) * comp * textureData.Width * textureData.Height);
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auto ptr = (Color32*)data.Get();
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for (int32 y = 0; y < textureData.Height; y++)
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{
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for (int32 x = 0; x < textureData.Width; x++)
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{
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Color color = SamplePoint(sampler, x, y, srcData->Data.Get(), srcData->RowPitch);
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if (sRGB)
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color = Color::SrgbToLinear(color);
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*(ptr + x + y * textureData.Width) = Color32(color);
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}
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}
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}
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const auto file = FileWriteStream::Open(path);
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if (!file)
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{
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LOG(Warning, "Failed to open file.");
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return true;
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}
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stbi__write_context s;
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s.func = stbWrite;
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s.context = file;
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int32 result = 99;
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switch (type)
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{
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case ImageType::BMP:
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result = stbi_write_bmp_core(&s, textureData.Width, textureData.Height, comp, data.Get());
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break;
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case ImageType::JPEG:
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result = stbi_write_jpg_core(&s, textureData.Width, textureData.Height, comp, data.Get(), 90);
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break;
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case ImageType::TGA:
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result = stbi_write_tga_core(&s, textureData.Width, textureData.Height, comp, data.Get());
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break;
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case ImageType::HDR:
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result = stbi_write_hdr_core(&s, textureData.Width, textureData.Height, comp, (float*)data.Get());
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break;
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case ImageType::PNG:
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{
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int32 ptrSize = 0;
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const auto ptr = stbi_write_png_to_mem(data.Get(), 0, textureData.Width, textureData.Height, comp, &ptrSize);
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if (ptr)
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{
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file->WriteBytes(ptr, ptrSize);
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result = 0;
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}
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else
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{
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result = 99;
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}
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break;
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}
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case ImageType::GIF:
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LOG(Warning, "GIF format is not supported by stb library.");
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break;
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case ImageType::TIFF:
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LOG(Warning, "GIF format is not supported by stb library.");
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break;
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case ImageType::DDS:
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LOG(Warning, "DDS format is not supported by stb library.");
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break;
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case ImageType::RAW:
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LOG(Warning, "RAW format is not supported by stb library.");
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break;
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default:
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LOG(Warning, "Unknown format.");
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break;
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}
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if (result != 0)
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{
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LOG(Warning, "Saving texture failed. Error from stb library: {0}", result);
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}
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file->Close();
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Delete(file);
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return result != 0;
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}
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bool TextureTool::ImportTextureStb(ImageType type, const StringView& path, TextureData& textureData, bool& hasAlpha)
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{
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Array<byte> fileData;
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if (File::ReadAllBytes(path, fileData))
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{
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LOG(Warning, "Failed to read data from file.");
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return true;
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}
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switch (type)
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{
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case ImageType::PNG:
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case ImageType::BMP:
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case ImageType::GIF:
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case ImageType::JPEG:
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case ImageType::HDR:
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case ImageType::TGA:
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{
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int x, y, comp;
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stbi_uc* stbData = stbi_load_from_memory(fileData.Get(), fileData.Count(), &x, &y, &comp, 4);
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if (!stbData)
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{
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LOG(Warning, "Failed to load image.");
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return false;
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}
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// Setup texture data
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textureData.Width = x;
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textureData.Height = y;
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textureData.Depth = 1;
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textureData.Format = PixelFormat::R8G8B8A8_UNorm;
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textureData.Items.Resize(1);
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textureData.Items[0].Mips.Resize(1);
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auto& mip = textureData.Items[0].Mips[0];
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mip.RowPitch = sizeof(Color32) * x;
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mip.DepthPitch = mip.RowPitch * y;
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mip.Lines = y;
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mip.Data.Copy(stbData, mip.DepthPitch);
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#if USE_EDITOR
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// TODO: detect hasAlpha
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#endif
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stbi_image_free(stbData);
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break;
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}
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case ImageType::RAW:
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{
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// Assume 16-bit, grayscale .RAW file in little-endian byte order
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// Check size
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const auto size = (int32)Math::Sqrt(fileData.Count() / 2.0f);
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if (fileData.Count() != size * size * 2)
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{
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LOG(Warning, "Invalid RAW file data size or format. Use 16-bit .RAW file in little-endian byte order (square dimensions).");
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return true;
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}
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// Setup texture data
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textureData.Width = size;
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textureData.Height = size;
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textureData.Depth = 1;
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textureData.Format = PixelFormat::R16_UNorm;
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textureData.Items.Resize(1);
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textureData.Items[0].Mips.Resize(1);
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auto& mip = textureData.Items[0].Mips[0];
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mip.RowPitch = fileData.Count() / size;
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mip.DepthPitch = fileData.Count();
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mip.Lines = size;
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mip.Data.Copy(fileData);
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break;
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}
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case ImageType::DDS:
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LOG(Warning, "DDS format is not supported by stb library.");
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break;
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case ImageType::TIFF:
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LOG(Warning, "TIFF format is not supported by stb library.");
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break;
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default:
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LOG(Warning, "Unknown format.");
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return true;
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}
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return false;
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}
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#endif
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